Could Floridians find out too late that they voted for a staunchly anti-gay U.S. Senator?

Florida’s leading GOP candidate for the U.S. Senate, Marco Rubio, doesn’t like to talk about social issues now that he’s the clear front runner for his party’s nomination. In fact, his campaign Web site is silent on key issues important to the LGBT community–nothing on employment non-discrimination, adoption, partnership rights, etc.

But Rubio, a 39 year-old former State House Speaker, has rocketed past Gov. Charlie Crist in polls of likely Republican voters largely on a message of conservative purity.

Florida LGBT activists say Rubio opposes marriage equality and supports the military’s ban on openly gay troops. In fact, his early endorsement by the rabidly anti-gay Family Research Council may indicate a more hard-core social agenda than he’d like like to acknowledge as he heads into a general election contest. ”FRC Action PAC believes that Marco Rubio will be a true advocate for the issues that best uphold and strengthen families. We are proud to support his candidacy,” said FRC’s Tony Perkins, a nationally known anti-gay talking head.

One Florida LGBT activist, who asked not to be named because he works with Tallahassee Republicans, told GayPolitics he believes Rubio and his staff have made a concerted effort to stay silent on LGBT issues. ”But the truth is Rubio’s horrible,” the source added.